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157217482 = 278608741
BaseRepresentation
bin10010101111011…
…11001011001010
3101221211110211201
421113233023022
5310221424412
623333414414
73616220002
oct1127571312
9357743751
10157217482
1180821904
124479a40a
13267580c6
1416c47002
15dc07e57
hex95ef2ca

157217482 has 4 divisors (see below), whose sum is σ = 235826226. Its totient is φ = 78608740.

The previous prime is 157217471. The next prime is 157217519. The reversal of 157217482 is 284712751.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 284712751 = 972935183.

It can be written as a sum of positive squares in only one way, i.e., 110691441 + 46526041 = 10521^2 + 6821^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39304369 + ... + 39304372.

Almost surely, 2157217482 is an apocalyptic number.

157217482 is a deficient number, since it is larger than the sum of its proper divisors (78608744).

157217482 is an equidigital number, since it uses as much as digits as its factorization.

157217482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78608743.

The product of its digits is 31360, while the sum is 37.

The square root of 157217482 is about 12538.6395593780. The cubic root of 157217482 is about 539.7180535465.

The spelling of 157217482 in words is "one hundred fifty-seven million, two hundred seventeen thousand, four hundred eighty-two".

Divisors: 1 2 78608741 157217482