190421415 has 32 divisors (see below), whose sum is σ = 346410240. Its totient is φ = 99193248.

The previous prime is 190421411. The next prime is 190421417. The reversal of 190421415 is 514124091.

It is not a de Polignac number, because 190421415 - 2² = 190421411 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190421411) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10597 + ... + 22206.

It is an arithmetic number, because the mean of its divisors is an integer number (10825320).

Almost surely, 2^190421415 is an apocalyptic number.

190421415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

190421415 is a deficient number, since it is larger than the sum of its proper divisors (155988825).

190421415 is a wasteful number, since it uses less digits than its factorization.

190421415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32860 (or 32854 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 190421415 is about 13799.3266140055. The cubic root of 190421415 is about 575.3144241271.

The spelling of 190421415 in words is "one hundred ninety million, four hundred twenty-one thousand, four hundred fifteen".