145387690 has 16 divisors (see below), whose sum is σ = 299083392. Its totient is φ = 49847184.

The previous prime is 145387679. The next prime is 145387691. The reversal of 145387690 is 96783541.

It is a super-2 number, since 2×145387690² = 42275160807072200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145387691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1038414 + ... + 1038553.

It is an arithmetic number, because the mean of its divisors is an integer number (18692712).

Almost surely, 2^145387690 is an apocalyptic number.

145387690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145387690 is an abundant number, since it is smaller than the sum of its proper divisors (153695702).

145387690 is a wasteful number, since it uses less digits than its factorization.

145387690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2076981.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 145387690 is about 12057.6817838256. The cubic root of 145387690 is about 525.8265920599.

The spelling of 145387690 in words is "one hundred forty-five million, three hundred eighty-seven thousand, six hundred ninety".